Originally Posted by
jonwvara
Aren't you making it pretty complicated?...my experience has been that all currently produced chain designated 5, 6, 7, or 8 speed works fine with any of those numbers of cogs.
The reason for my question is just the reverse, not whether today's chains will work with older systems but whether my old chain would need to be replaced if I went to more cogs on the rear. I remember when the 126mm space came out, when 6-speed and 7-speed clusters came out, and when "narrow" chains first came out. I recalled that one of them supposed required the new narrow chain. I just didn't remember which one!
Thanks.